Postglacial matrix diffusion in a boulder sample

Kari Rasilainen, Juhani Suksi, K.-H. Hellmuth, Antero Lindberg, S. Kulmala

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    3 Citations (Scopus)


    A boulder sample was studied for its unusual U content. Analyses of U-series nuclides within the rock matrix perpendicular to an assumed fracture face show abrupt pulse-like concentration distributions with very low concentrations of U daughters. Both Th-230/U-234 and Pa-231/U-235 activity ratios are low, indicating recent U accumulation into the rock. Matrix diffusion is tested as a possible cause for the experimental observations. We assume that the diffusion process was triggered and controlled by rock expansion, strong mixing of different water types and rapid land uplift at the end phase of the last glaciation.
    Original languageEnglish
    Title of host publicationScientific Basis for Nuclear Management XIX
    EditorsWilliam M. Murphy, Dieter A. Knecht
    Place of PublicationPittsburgh
    PublisherMaterials Research Society
    ISBN (Print)978-1-55899-315-0
    Publication statusPublished - 1996
    MoE publication typeA4 Article in a conference publication
    EventScientific Basis for Nuclear Management XIX - Boston, United States
    Duration: 27 Nov 19951 Dec 1995

    Publication series

    SeriesMaterials Research Society Symposia Proceedings


    ConferenceScientific Basis for Nuclear Management XIX
    Country/TerritoryUnited States


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